The first book of the Khuddaka-nikāya of the Sutta-piṭaka - a translation of the Khuddakapatha, the shortest book in the Pali Tipitaka, and the Paramatthajotika, a commentary on it by Buddhaghosa (5th century C.E.). It appears to have been designed as a primer for novice monks and nuns. In nine short passages it covers the basic topics that one would need to know in beginning Buddhist monastic life.